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-rw-r--r--ext/win32/lib/win32/registry.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/win32/lib/win32/registry.rb b/ext/win32/lib/win32/registry.rb
index 3830a5a3ee..aa2d9fc0ce 100644
--- a/ext/win32/lib/win32/registry.rb
+++ b/ext/win32/lib/win32/registry.rb
@@ -326,7 +326,7 @@ For detail, see the MSDN[http://msdn.microsoft.com/library/en-us/sysinfo/base/pr
case type
when REG_SZ, REG_EXPAND_SZ, REG_MULTI_SZ
data = data.encode(WCHAR)
- size ||= data.size + WCHAR_SIZE
+ size ||= data.bytesize + WCHAR_SIZE
end
check RegSetValueExW.call(hkey, make_wstr(name), 0, type, data, size)
end